+++ /dev/null
-/*\r
- Copyright (c) 2008, Adobe Systems Incorporated\r
- All rights reserved.\r
-\r
- Redistribution and use in source and binary forms, with or without \r
- modification, are permitted provided that the following conditions are\r
- met:\r
-\r
- * Redistributions of source code must retain the above copyright notice, \r
- this list of conditions and the following disclaimer.\r
- \r
- * Redistributions in binary form must reproduce the above copyright\r
- notice, this list of conditions and the following disclaimer in the \r
- documentation and/or other materials provided with the distribution.\r
- \r
- * Neither the name of Adobe Systems Incorporated nor the names of its \r
- contributors may be used to endorse or promote products derived from \r
- this software without specific prior written permission.\r
-\r
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS\r
- IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,\r
- THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR\r
- PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR \r
- CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,\r
- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,\r
- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR\r
- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF\r
- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING\r
- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS\r
- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\r
-*/\r
-\r
-package com.adobe.serialization.json {\r
-\r
- public class JSONDecoder {\r
- \r
- /** The value that will get parsed from the JSON string */\r
- private var value:*;\r
- \r
- /** The tokenizer designated to read the JSON string */\r
- private var tokenizer:JSONTokenizer;\r
- \r
- /** The current token from the tokenizer */\r
- private var token:JSONToken;\r
- \r
- /**\r
- * Constructs a new JSONDecoder to parse a JSON string \r
- * into a native object.\r
- *\r
- * @param s The JSON string to be converted\r
- * into a native object\r
- * @langversion ActionScript 3.0\r
- * @playerversion Flash 9.0\r
- * @tiptext\r
- */\r
- public function JSONDecoder( s:String ) {\r
- \r
- tokenizer = new JSONTokenizer( s );\r
- \r
- nextToken();\r
- value = parseValue();\r
- }\r
- \r
- /**\r
- * Gets the internal object that was created by parsing\r
- * the JSON string passed to the constructor.\r
- *\r
- * @return The internal object representation of the JSON\r
- * string that was passed to the constructor\r
- * @langversion ActionScript 3.0\r
- * @playerversion Flash 9.0\r
- * @tiptext\r
- */\r
- public function getValue():* {\r
- return value;\r
- }\r
- \r
- /**\r
- * Returns the next token from the tokenzier reading\r
- * the JSON string\r
- */\r
- private function nextToken():JSONToken {\r
- return token = tokenizer.getNextToken();\r
- }\r
- \r
- /**\r
- * Attempt to parse an array\r
- */\r
- private function parseArray():Array {\r
- // create an array internally that we're going to attempt\r
- // to parse from the tokenizer\r
- var a:Array = new Array();\r
- \r
- // grab the next token from the tokenizer to move\r
- // past the opening [\r
- nextToken();\r
- \r
- // check to see if we have an empty array\r
- if ( token.type == JSONTokenType.RIGHT_BRACKET ) {\r
- // we're done reading the array, so return it\r
- return a;\r
- }\r
- \r
- // deal with elements of the array, and use an "infinite"\r
- // loop because we could have any amount of elements\r
- while ( true ) {\r
- // read in the value and add it to the array\r
- a.push ( parseValue() );\r
- \r
- // after the value there should be a ] or a ,\r
- nextToken();\r
- \r
- if ( token.type == JSONTokenType.RIGHT_BRACKET ) {\r
- // we're done reading the array, so return it\r
- return a;\r
- } else if ( token.type == JSONTokenType.COMMA ) {\r
- // move past the comma and read another value\r
- nextToken();\r
- } else {\r
- tokenizer.parseError( "Expecting ] or , but found " + token.value );\r
- }\r
- }\r
- return null;\r
- }\r
- \r
- /**\r
- * Attempt to parse an object\r
- */\r
- private function parseObject():Object {\r
- // create the object internally that we're going to\r
- // attempt to parse from the tokenizer\r
- var o:Object = new Object();\r
- \r
- // store the string part of an object member so\r
- // that we can assign it a value in the object\r
- var key:String\r
- \r
- // grab the next token from the tokenizer\r
- nextToken();\r
- \r
- // check to see if we have an empty object\r
- if ( token.type == JSONTokenType.RIGHT_BRACE ) {\r
- // we're done reading the object, so return it\r
- return o;\r
- }\r
- \r
- // deal with members of the object, and use an "infinite"\r
- // loop because we could have any amount of members\r
- while ( true ) {\r
- \r
- if ( token.type == JSONTokenType.STRING ) {\r
- // the string value we read is the key for the object\r
- key = String( token.value );\r
- \r
- // move past the string to see what's next\r
- nextToken();\r
- \r
- // after the string there should be a :\r
- if ( token.type == JSONTokenType.COLON ) {\r
- \r
- // move past the : and read/assign a value for the key\r
- nextToken();\r
- o[key] = parseValue(); \r
- \r
- // move past the value to see what's next\r
- nextToken();\r
- \r
- // after the value there's either a } or a ,\r
- if ( token.type == JSONTokenType.RIGHT_BRACE ) {\r
- // // we're done reading the object, so return it\r
- return o;\r
- \r
- } else if ( token.type == JSONTokenType.COMMA ) {\r
- // skip past the comma and read another member\r
- nextToken();\r
- } else {\r
- tokenizer.parseError( "Expecting } or , but found " + token.value );\r
- }\r
- } else {\r
- tokenizer.parseError( "Expecting : but found " + token.value );\r
- }\r
- } else {\r
- tokenizer.parseError( "Expecting string but found " + token.value );\r
- }\r
- }\r
- return null;\r
- }\r
- \r
- /**\r
- * Attempt to parse a value\r
- */\r
- private function parseValue():Object\r
- {\r
- // Catch errors when the input stream ends abruptly\r
- if ( token == null )\r
- {\r
- tokenizer.parseError( "Unexpected end of input" );\r
- }\r
- \r
- switch ( token.type ) {\r
- case JSONTokenType.LEFT_BRACE:\r
- return parseObject();\r
- \r
- case JSONTokenType.LEFT_BRACKET:\r
- return parseArray();\r
- \r
- case JSONTokenType.STRING:\r
- case JSONTokenType.NUMBER:\r
- case JSONTokenType.TRUE:\r
- case JSONTokenType.FALSE:\r
- case JSONTokenType.NULL:\r
- return token.value;\r
-\r
- default:\r
- tokenizer.parseError( "Unexpected " + token.value );\r
- \r
- }\r
- return null;\r
- }\r
- }\r
-}\r
fnp / redakcja.git / blobdiff